fix region "valid-transient" property

libs/ardour/region.cc

@@ -1284,6 +1284,10 @@ Region::_set_state (const XMLNode& node, int /*version*/, PropertyChange& what_c
 		}
 	}
 
+	// saved property is invalid, region-transients are not saved
+	if (_transients.size() == 0){
+		_valid_transients = false;
+	}
 
 	return 0;
 }

libs/ardour/source.cc

@@ -173,15 +173,16 @@ Source::has_been_analysed() const
 void
 Source::set_been_analysed (bool yn)
 {
-	{
+	if (yn) {
+		if (0 == load_transients (get_transients_path())) {
+			yn = false;
+		}
+	}
+	if (yn != _analysed); {
 		Glib::Threads::Mutex::Lock lm (_analysis_lock);
 		_analysed = yn;
 	}
-
-	if (yn) {
-		load_transients (get_transients_path());
-		AnalysisChanged(); // EMIT SIGNAL
-	}
+	AnalysisChanged(); // EMIT SIGNAL
 }
 
 int